Fluorescent Nanobeads: A New Generation of Easily Detectable Water Tracers

Agenet, Nicolas; Moradi-Tehrani, Navid; Tillement, Olivier

doi:10.2523/15312-ms

Cited by 9 publications

(9 citation statements)

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“…In this study, a sweep of CQDs after 0.8 porous volumes and the injection brine was observed, and a sweep of about 99% of the CQDs was obtained after 3 PV are injected with the brine, as can be seen in Figure 11b. The obtained curve resembles the curves done for KI tracer by Agenet et al, 30 showing that the chemical nature of the CQDs produces the typical qualities of a tracer without affecting the physicochemical properties of a field.…”

Section: Resultssupporting

confidence: 78%

Easy and Rapid Synthesis of Carbon Quantum Dots from Mortiño (Vaccinium Meridionale Swartz) Extract for Use as Green Tracers in the Oil and Gas Industry: Lab-to-Field Trial Development in Colombia

Franco

Candela

Gallego

et al. 2020

Ind. Eng. Chem. Res.

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The main objective of this study is to develop nanotechnology-based materials, specifically carbon quantum dots (CQDs), as alternative nonpolluting, nontoxic, and easily manipulated tracers for the oil industry using an easy and rapid synthesis from Mortinõ (Vaccinium meridionale Swartz) extract, a process that was evaluated in the laboratory and subjected to a Colombian oil field trial. The CQDs were synthesized using an easy and rapid microwave-assisted carbonization (MWC) methodology involving aqueous natural extraction in the presence of an organic nitrogen precursor. A displacement test at reservoir conditions in a porous media was used for evaluating CQDs retention, and a breakthrough curve with a CQDs saturation of around 1 pore volume injected was obtained, indicating that the CQDs could be completely removed from the porous media with null retention due to a poor interaction with the formation and preferential affinity to the aqueous phase. Fluorescence tests showed that quantification of the synthesized CQDs could be achieved for up to 1 ng L −1 . Coreflooding tests at reservoir conditions were performed under two scenarios: (1) monophase coreflooding (the core was saturated with water) and (2) biphasic coreflooding (at residual saturation of crude oil). The results showed that the CQD S behave excellently within these outlines and are not affected by the presence of crude oil, obtaining a breakthrough that is almost ideal for a tracer. A CQDs field trial in Colombia was conducted by injecting 20 kg of the nanomaterial at a concentration of 500 000 mg L −1 . The CQDs were analyzed in 10 producer wells, showing that they are useful as interwell tracers and the different interconnections between the different wells in the field were stablished. This study places the technology at a technology readiness level (TRL) of around 8, opens a broader landscape for the use of nanotechnology in the oil industry, and maintains Colombia as a pioneer in the application of nanoparticles and nanofluids under field conditions.

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Section: Resultssupporting

confidence: 78%

Easy and Rapid Synthesis of Carbon Quantum Dots from Mortiño (Vaccinium Meridionale Swartz) Extract for Use as Green Tracers in the Oil and Gas Industry: Lab-to-Field Trial Development in Colombia

Franco

Candela

Gallego

et al. 2020

Ind. Eng. Chem. Res.

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“…This single-digit ppb level of detection limit is about five orders of magnitude better than that obtained using the spectral method by us (see Fig. 1 ) and others 15 . Based on the afterglow data for Fig.…”

Section: Resultscontrasting

confidence: 48%

“…Although these optical nanoparticles exhibit certain promising characteristics, they suffer from a common drawback – an unsatisfactory detection sensitivity in the presence of crude oil, which is mainly caused by the strong autofluorescence from the highly fluorescent organic residues (e.g., polycyclic aromatic hydrocarbons) contained in crude oils under constant external excitation 14 . To suppress the background fluorescence, long fluorescence life-time tracer nanoagents, such as Au/fluorophore/silica fluorescent nanobeads 15 , were developed, allowing detection via time-resolved fluorescence spectroscopy. However, the reported detection remains poor – the tracer detection limit is about 200 ppm in synthetic seawater containing 5 wt.% crude oil 15 .…”

mentioning

confidence: 99%

“…To suppress the background fluorescence, long fluorescence life-time tracer nanoagents, such as Au/fluorophore/silica fluorescent nanobeads 15 , were developed, allowing detection via time-resolved fluorescence spectroscopy. However, the reported detection remains poor – the tracer detection limit is about 200 ppm in synthetic seawater containing 5 wt.% crude oil 15 .…”

mentioning

confidence: 99%

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Ultra-sensitive in-situ detection of near-infrared persistent luminescent tracer nanoagents in crude oil-water mixtures

Chuang

Liu

Wang

et al. 2016

Sci Rep

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Current fluorescent nanoparticles-based tracer sensing techniques for oilfield applications suffer from insufficient sensitivity, with the tracer detection limit typically at the several hundred ppm level in untreated oil/water mixtures, which is mainly caused by the interference of the background fluorescence from the organic residues in crude oil under constant external excitation. Here we report the use of a persistent luminescence phenomenon, which enables an external excitation-free and thus background fluorescence-free measurement condition, for ultrahigh-sensitivity crude oil sensing. By using LiGa5O8:Cr3+ near-infrared persistent luminescent nanoparticles as a tracer nanoagent, we achieved a tracer detection limit at the single-digit ppb level (down to 1 ppb concentration of nanoparticles) in high oil fraction (up to 65 wt.%) oil/water mixtures via a convenient, CCD camera-based imaging technique without any pretreatment or phase separation of the fluid samples. This detection limit is about four to five orders of magnitude lower than that obtained using conventional spectral methods. This study introduces a new type of tracer nanoagents and a new detection method for water tracer sensing in oil reservoir characterization and management.

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“…(Keswick et al, 1982, Becker et al 2003 Microspheres / nanoparticles) Aq. Hydraulic connection, groundwater drift, mixing None, (adsorption, coagulation, size exclusion) Fluorescently labeled polystyrene or latex microspheres (Becker et al, 1999;2003), artificial DNA labeled microspheres (Sharma et al, 2012), fluorescent silica nanobeads (Agenet et al, 2011) Partitioning tracers (equilibrium tracers) Cation exchange, (anion exchange) Inorganic (Dean et al, 2012) and organic cations (bases) (Leecaster et al, 2012;Reimus et al, 2012) Ionic molecules, low log D, high pKa…”

Section: Organic Molecules and Their Application As Tracers In Geosys...mentioning

confidence: 99%

On the possibility of using organic molecules in the characterization of subsurface processes

Schaffer¹

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Prior to discussing specific processes affecting the fate of solutes in the subsurface, the term subsurface process has to be defined. Here, subsurface processes include all phenomena/effects leading to spatial and/or temporal concentration changes of a considered solute in the subsurface. The term transport processes is often used * All pKa values given for bases refer to pKa values for the conjugate acid (protonated species).

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Fluorescent Nanobeads: A New Generation of Easily Detectable Water Tracers

Cited by 9 publications

References 0 publications

Easy and Rapid Synthesis of Carbon Quantum Dots from Mortiño (Vaccinium Meridionale Swartz) Extract for Use as Green Tracers in the Oil and Gas Industry: Lab-to-Field Trial Development in Colombia

Easy and Rapid Synthesis of Carbon Quantum Dots from Mortiño (Vaccinium Meridionale Swartz) Extract for Use as Green Tracers in the Oil and Gas Industry: Lab-to-Field Trial Development in Colombia

Ultra-sensitive in-situ detection of near-infrared persistent luminescent tracer nanoagents in crude oil-water mixtures

On the possibility of using organic molecules in the characterization of subsurface processes

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